BWCU00322518501M00

Overview

The BWCU00322518501M00 is a surface-mount common mode choke manufactured by Pulse Electronics. It features an impedance of 500 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 1A with a DC resistance of 200 mOhms. The component operates within a temperature range of -40°C to +105°C and utilizes an unshielded design. Packaged in reels, it is intended for PCB mounting applications.

Feature Summary

• Provides common mode noise suppression for high-speed data lines
• Designed for surface mount technology integration
• Unshielded construction suitable for space-constrained layouts

Applications

• USB 2.0 interface protection
• IEEE 1394b (FireWire) signal filtering
• LVDS (Low-Voltage Differential Signaling) circuit noise reduction

Procurement Notes

Verify the specific impedance value against project requirements, as datasheet listings may vary between 90 Ohms and 500 Ohms for this series. Confirm the manufacturer source is Pulse Electronics rather than Chilisin, despite potential naming overlaps in distributor catalogs. Ensure the ordering suffix matches the required packaging format and tolerance specifications before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring common mode filtering for differential signaling standards such as USB or FireWire. Evaluate the 1A current rating to ensure it meets the operational load without saturation. Consider the unshielded nature of the device regarding electromagnetic interference susceptibility in dense board layouts compared to shielded alternatives.

Part Context

This part belongs to the BWCU series of SMD common mode chokes from Pulse Electronics. It is functionally equivalent to the alias SDW3225S-2-800TF. The series targets portable electronics and digital interfaces needing compact EMI suppression solutions compatible with standard reflow soldering processes.

Replacement Considerations

Public confirmed substitute part numbers include SDW3225S-2-800TF.